Conical cup and ice cream receptacle



Jan. 18, 1938. i M. MERTA Q 2,195,949

- ,CCNICAL CUP AND ICE CREAM RECEPTACLE Filed Oct. 8, 1936\\\\\\WIIIl///// IN VENTOR.

Patented Jan. 18, 1938 UNITED ST TES PATENT. OFFICE 2.13:5,949 comcsr.curmrca cnaaunacer'rscm Method Mer a, Chicago, 111. Application mma',1936, Serial No. 164, 71 Claims. (01. 229-) durable in use.self-locking, quickly and easily formed and which is possessed of adesirable degree of flexibility to permit the complete receptacle to bemade without adhesive and to cause it to be satisfactory for use as acup or a cup liner for retention of liquids.

Blanks for producing cups of my novelconstruction are cut from papersheets either plain surfaced or having water-proofed coatings orqualities, after which the novel blank of my invention is rolled or bentabout a suitable conical or-substantially conical form so that ,onelateral 5 edge of'the cup forms an outer overlapping edge,

and the'opposite lateral edge of the blank and adjacent area become theoverlapped edge, the two overlapping areas being held in close proximityto other by the tendency of the paper blank to spread out to itsoriginal'flat form.

Further locking means comprises the locking engagementby insertion of aprojecting tongue portion of the blank-in a properly positioned slit andby additional interlocking engagement be a5 tween suitably formedprojecting members form ing part of theicup blank one of which issubstantially adiacent the upper peripheryof'the completed cup. I

one object of 'the present invention is to pro- 40 vide a new and noveldesign blank of paper or the like which has a plura ty of peripheraltongues adapted to interengage or interlock in the formation of the cup;and which blank is of an outline permitting reversal of the blank so 45.that it may be rolled and formed to present either {one of the flatsurfaces as the exterior of the cup.

A further objector my invention is the provision of a paper receptacle"of conical cross secufltion of economical manufacture-capable, com- 50pact nesting positions, and non-leakable. all without the u'se'ofadhesive to hold the same in formed position, andadapted, for useparticularly with semi-solid products su 'ch as ice cream, and whichsemi-solid body which it normally y be easily gripped and removed i'romthe A still further important object "oi my invention is the provisionof a blank adapted to be formed into a paper receptacle adapted for useeitheras a cup liner or as a receptacle er se having no adhered areas,and having a plurality 5 I of integral projections at and adjacent itsperiphei'al edges which are adaptedto interlock and thereby providemeans for releasably retaining the cup in its conical formed position.

It is a further object of this invention to pro-- videa blank, capableof being formedinto a conical receptacle, having a pair of curved edgesforming a peripheral re-entrant angle and having a relatively longarcuate edge and a transversely extended slit at a point near thecenter'of the 15 blank for receiving a projecting tongue formedintegrally with the blank edge. Y

A still further object of my invention is a provision of a flexibleblank of paper or the like adapted to be formed into a paper receptacleof 20 triangular crosssection having a radially extending recess formedadjacent. one end of a relatively long arcuate edge and a projectingtongue at-the opposite end of said arcuate edge adapted to' interlock'with said recessin the .25

formation of i said cup. Y

Other and still further objects-of my invention will be apparent fromthe disclosures of the accompanying drawing and description; 4

The invention (in a preferred form)" is illus- 30 trated in-the drawingand hereinafter more fully described. I

Fig. 1 isa plan view of the novelblank of my invention.

Fig. 2 is 'a perspective view of a completed receptacle formed from' theblanket Fig. 1.

Fig. 3 is a top plan view, looking from above,

of the receptacle in assembled position.

Fig. 4 is a fragmentary side elevation showin the apex portion ofthecup-in partially assem- 40 bled position just prior to insertion ofthe'extendingtongue. I 4 'Referring to the blank 01' Fig. 1, which ispreferably made of paper, and which flgure'merely illustrates thepreferred form of my invention, referencenumeral 10 indicates generallythe blank per 'se, which is preferably made of suitable-paper, which hasbeen coated ,or impregnated either during or subsequent to itsmanufacture with-any one of a number of waterrepellent compositions suchas paramnor' the like to make said paper substantially impervious Atowater and to give it the-proper degree of stifl-.

ness and rigidity. I

blank ID has an arcuateedge ll, -which 56 ate edge I I and preferably ina direction parallel to the radial line of said are. It will be notedthat the slit or recess I! has a rounded opening to provide forconvenient insertion thereinto of an integral tongue of said blankhereinafter dee scribed. The rounded edge on the right of said slit l2,designated by reference numeral Ila merges and terminates in anon-radial, straight converging edge l3 as indicated. The end of theblank III at the opposite end of arcuate edge H has formed integrallytherewith an extending and projecting tongue or extension II, theprojecting edge of which is preferably, though not necessarilysubstantially semi-circular which semi-circular edge terminates in anacute-angled recess i5 formed at the juncture of the edge of said tongueI and a non-radial converging edge It. Edge it maybe in an irregularline, and while illustrated as slightly curved inwardly, may be straightor otherwise. The lower end of the non-radial converging side edge 16terminates and merges with the annular edge of an integral extension ortongue I! whichis preferably formed so that it extends in -a transverseor substantially horizontal and slightly downward direction when theblank is substantially in the positionshown in Fig. 1. The lower edge "awhich defines the lower portion of the ex-. tension or tongue I! andalso a portion of blank III, is arcuate asindicated and merges with thecurved edge IS in forming the re-entrant angle is at such juncture. Theinwardly curved edge ll forms a lower extended portion of the straightside edge I! as shown in the drawing.- It will be noted that the portionof the blank immediately adjacent the curved edge I8 and exteriorly of achord drawn from the apex of reentrant angle I! also forms an extensionor gripping portion designated by reference numeral 20 which facilitatesthe formation of the blank into a cup or receptacle and providesconvenient means whereby the paper blank may be gripped by suitablemandrel and rolled into conical form.

In the formation of the cup, the mandrel (not shown) which is offrusto-conical form with a movable gripping element representing aportion of its tip, is adapted to grip the extension 20 so that the onlygripped portion of the blank will be that exterior of the chordillustrated in dotted lines in Fig. 1. Thereupon, the extending tongue20 is folded along the line defining a chord which is shown in dottedlines in- Fig. l, and

thereupon the mandrel is rotated and the cup rolled and wrapped aboutits conical surface in an arcuate path beginning at said extension 20and until said blank I! is nearly flat on the mandrel and the oppositeedge i6 and tongues H and II are substantially in overlapping adjacentpositions.

As clearly indicated in the drawing, a longitudinally and transverselyextending slit II is formed substantially midway between tongue I andslit l2 and at a point above re-entrant angle l9 about one-third of thedistance from said angle I! to arcuate edge |I. When the blank ill is inthe rolled position on the mandrel as heretofore described, the areasadjacent the nonradial side edges l3 and ii are overlapped asclearly-shown in dotted lines in Fig. 3, and the blank areas adjacentthe gripping extension 20 form the interior reenforcing portion for theapex of the cup, as clearly indicated in Fig. 3. The first step which iscarried out to secure the conical receptacle in proper form and in aposition shown in Fig. 2 is to insert the extending tongue ll throughslit II which it overlies in said position, saidinsertion movement beingtoward the interior of the cup, whereupon the lower arcuate edge oftongue I. and recess l8 will impinge and interlock in the slit l2thereby holding said tongue H in the locked position illustrated in Fig.2. The lower exterior overlapping portions of the blank [IL-when in therolled position for assembly as described, are secured and held in placeagainst an exterior surface of the blank areas adjacent side edge II andextension 20 by means of interlocking engagement of extendingtongue i1and the relatively narrow slit 2i.

When the blank has been rolled to the assembling position as beforedescribed, the extending tongue I I is inserted, either mechanically orotherwise, into slit 2|, said slit 2| bdng of a length so that tongue I!fits tightly therein, and when inserted, the edges of said slit willimpinge upon the surfaces of tongue l1 and frictionally retain the sametherein. As shown in Fig. 2, the inserted tongue I1 is shown in dottedlines on the inside of the cup. The position of the rolled blank justprior to the insertion of the extending tongue I! is shown in sideelevation in Fig. 4, which Fig. 4 also shows tne shape of the slit andits converging side edges. Fig. 3 shows a view taken from the top, andparticularly clarifies the areas of the cup blank adjacent edge I! whichare overlapped by the opposite lateral side portions thereof. Asindistrued as limitations upon the invention, its concept or structuralembodiment as to the whole or any part thereof except as defined in theappended claims.

I claim:

l. A conical receptacle formed from a blank having a central slot and anarcuate edge. two opposed converging side edges extending from saidarcuate edge, a pair of spaced apart projecting tongues formed integralwith one of said side edges, the lower portions of said side edgesmerging in a reentrant angle whose apex is the axis of said arcuateedge, said arcuate edge having a slit therein.

2. A blank having an arcuate edge having a slit opening in said arcuateedge, two converging side edges, one of said side edges having twospaced apart integral transversely extending tongues, said side edgesmerging in a curved reentrant angle whose apex is at the axisof saidarcuate edge, said blank having a central slit adapted to receive thelower of said transversely extending tongues.

3. A blank for a cup of substantially conical form having asubstantially central slit, having an upper arcuate edge, a pair ofopposite side edges converging from said arcuate edge to each other, thelower edges of said blank defining adtension on' one side ofsaid'angle.and forming an integral projecting tongue on the other side of saidangle adapted to be inserted in said central slit.

4. A receptacle of paper or the like of triangular cross section and ofsubstantially conical form and i'ormed from a single blank-whoseopposite side edges are overlapped, the periphery of said receptaclehaving a slit and a spaced apart tongue extending from one side edgeinserted therein for holding said receptacle in rolled p0 sition, saidblank having a substantially central slit. said cup having an integrallower tongue extendingirom one of said overlapped edges and in saidcentral slit.

5. A cup of triangular central cross section and of conical shape formed01a single blank. having its opposite side edgesoverlapped and held to-'gether by inter-e iig'a'gernent of a to'ngueand slit onopp'osite sidesrespectwely of said blank, and

having a lower integral tongue, said lower tongue being inserted in aslot 'oelow-theperiphery of 10 said cup. METHOD MER'I'A.

